Why Always sensor is not sending pulse consistently?
The problem is that the Always sensor is going True and staying there. This works fine for the Motion actuator which will continue to do whatever you want it to as long as its input is True. This doesn't work however for the Property actuator. It only gets triggered when ever the input goes from False to True. This can be seen by hooking up a keyboard sensor to it instead. If you set it to a key and hold that key, the motion will happen continuously, while the property will only have one added to it when the key is first pressed. To get around this you need to set the Always sensor to True level triggering, which means that it will go False then True then False and so forth at the pace defined by the Freq slider.